Lock



De 5 1933 A. E. BUERossE 1,937,627

LOCK

Filed Oct. l, 1932 4 Sheets-Sheet l 14g@ 4' //mf E ffm/"17555".

@www l m09/ Dec. 5, 1933.

A. E. BU EROSSE LOCKv Filed bet. l, 1952 4 sheets-sheet 2 SM1/M "40A//mi E 5i/M7555 o@ w "MBW www DOC. 5, 1933. A E. BUEROSSE 1,937,627

LOCK

Filed Oct. l, 1932 4 Sheets-Sheet 3 mi IIIII I @MUM y 2f 4f/w 5l/W555i@www I Patented Dec. 5, 1933r V *1,937,62'7fy Look EVBuerosse,Niva-uwautos'a,r l l Application-'october 1, 193,2i serial No. s353717.

i 22 Claims.

Y .Thisinvention relates to locks and refersmore' particularly .topermutation locks for securing doors vor closures `and particularly .thedoors of safes andl the like'closed...

lt is a general object of this inventionfto pro-` vide a lock of thecharacter describedwhichis kit actuated .by-push buttons; j j

Another object of this invention is to provide a-locl .oapable ofactuation by push buttons to avoidv objectionable projections beyond.the face ofthe door or panel. mounting the lock.f l' -A further purposeof. .thisinvention is topro vide a lock-of, thecharacterdescribed, theun-` locking of. which .requires the successive de# f. pression-of allloila seriesof. push. buttons.

Another: object of this invention resides inthe provision. of .meanswhereby the mechanism maybey securedina partially loekedcondition toYfacilitate locking and 'unlocking thereof during the :day time orwhen-frequent opening and clos.-

.Another object ofi this invention resides iin'ftheV -proyision of alock .mechanism 'ofthe character described embodying ay locking bolt.adapted `to y bcretraeted against the force of a spring,'by .the

successive `depression .of a yseriesof buttons op eratingon -saidlocking `bolt through the medium;

Andvafurther object-fof this invention resides. in the 'provision of a=permutationlock'rhechfl anism or the character .describedxwhich is.l so,

constructed as to readily enable changing orv resetting or itscombination.

. With .thel above andY other. objects'Y in kvievv which will. appear`as thedescriptionpro eeds, the invention resides intheqnovelconstruction;

combination and arrangement of...parts Vsubstan-l tiallyashereinafterdescribed and more particularly4 defined by theappendedclaiinait. being understood that such changesin the: preciseembodiment of the herein disclosed invention may be inadeascomeiwithin;thescopeiof ,the

claims. j l

int-the .accon'ipanyingV drawings, one complete example oi the physicalembodiment of thisin.-V vention .is illustrated constructed accordingto` bestinode-soardevised for the .prac'ztical` application. ofv theprinciples thereof, and in'.y

which provided with the'lock mechanism of this invention 'andillustrating the the actuating buttons; Y i A i. e

Figure 2 is a: rear viewgof the door r'of the saiejwith parts brokenaway andfin section and Figure l is a front elevation of a conventional.

arrangement .-of 'ject the boltV outwardlyof the aperture*Qf'int'oA(cri-fai.)

illustrating lpar'ticuiariyV the dispc'siti'on.;,f. 1 the` i lockrnechanisrn thereon;

vvFig-ure 3i' is Aa section v Figure-2 on the' plane of the line "3-35iy Figure 4 is a vsectional Viewd taken.` through Figure on the plane oftheiline4'-4;

Figure 5 Ais. a sectionalview'ltaken; Figure fon the plane'ofyvthe lineEli-#5; Y Figure` is a cross sectional; ieitftaken througlr Figure lis adetail p erspective'view ofi the bolt movingplatevandthe'latchjior'iholdingvthesame .in an intermediate.position.;.and

Figure 8 is av detail!sectional, View'. through Figure 2 on Vtheplane'oijthelin'eijLQ-fg"- i 'view maken through through l- Y y aken.

Referring non7 more `particularly't o"-the'accompanying draWings, in.Which" like'nl inierals'.`

designate .like vpartsthroughout the 'several Views,Y

Ythe-numeral11 indicates asafeQoffconventionaliy Y. y

to [swing -op'enf and closed.

` Totavoid' objectionable projections beyondthe fron-t faceoithersafeythe hinges .'3 of the door' l arel preferably'entirelyconcealed andAdisposed"v Within vthe structure of the door andgtheWallv'off 4the safe -towhichit is hinged." `Concealing'gtheV hinges. invthis manner substantially reducesgthe eiect'ive depth of thesafe'and'thus facilitates its@k passage., through;`- doors and. narrowcoorrido'rsj'. but this advantageY was heretofore counter-actedV bythedial )and Aknobbf the .conventional 'loclfz mechanism employed'tosecureithe door closed.;

` In the present instance, :the lock 'mechanis'ni' indicated generallyby the r,iiu'rneral Vfi',.fis' 'posi` tioned behind thefront Wallorfaceplate 5 of the' door. as is customary, and While its actuating meansWhich'cornprises a small rotatable knob f6'- anda plurality of buttons'7,.projects beyond'tlie faceoi'the'wall 5, thev distance the-knob'Gand.

buttons ,7 proj ect is'smallQas Icompared to the con;Yventional'dial"and'knobk 'i The lock mechanism comprisesva main boltSfslidable through an vaperture 9 lin one :wall-:10: of 4an enclosure l1mounted onthe. innerfa'cerofv the door; -The Alocltf mechanisme-isdisposed en tirely withinfthis enclosure,Y andas a--protection againstfire, .the entire enclosure is packed` with@ Y asbestos. lFor thesake ofclaritygfthis-rpacking. j A

offasbestos 'has not been illustratedt. v. The bolt y8 -is mounted vonanarrn 12 .extending upwardlyl from a plate r13:- slidably mounted. in

fixed guides 14 and, 15 and yieldably urged to pro-.

locking positicn,b'y an expansivespririgl'. Oli-.-v

viousiy when therdoori is 'cipsed and the boit fris projected to itslocking position by the spring, the end thereof enters a keeper opening(not shown) formedV in the adjacent wall of the safe.

Theguides 14 and 15 comprise a plurality of U-shaped supporting brackets17 secured to a base plate 18, which in turn is xed to the inner face ofthe wall 5, and anged plates 19 attached to the arms of the U-shapedbrackets 17 by screws 20. The flanges 21 of the plates are spaced fromthe ends of the bracket arms a distance to slidably receive the plate13. l

The plate 13 is provided with'a plurality of holes 22 arranged in twosets and in three rows.

" In certain Vof these holes stop pins 23 are positioned, the Vlocationof the pins determining the combination of the lock mechanism as will behereinafter more fully described. l

These pins 23 may be of any suitable construction, but in the presentinstance have heads 24 adaptedto abut the inner face of the plate 13 andproject therefrom toform stops. Cotter pins 2'5 passed through the innerends of Vthe pins serve *to readily detachably secure the pins in theirrespective apertures.

Between the plate 13 and the wall 5y ofthe door vdirectlybehind the pushbuttons 7 are two sets .of pivoted levers 26. These levers are disposedin planes coinciding Vwith the three longio armso'f the brackets 17V andaremaintained proplerly spaced on' the shafts 30 by yspacers 31. Springs32.carried by the levers and having their free ends engaging rods 33parallel to the shafts 30, l serve to yieldingly, urge the levers totheir normal inoperative positions at whichV they are kdisengagedfi'romtheir respective stop pins.

'I'he'normalinoperative positions of the levers y 26 are `dellnedby theengagement of their arms 27 with the inner ends of their respectiveactuator buttons. 'These buttons are Yslidablyv mounted in aperturesextending throughthe wall 5, the base plate 18Yand reinforcing bars 34secured to the l inner face of the base plate 18,. Pins 34 carried bythe .buttons limit their outward projection.'

Y j. vl'romth'eV description thus far,`it` is evident that y sequencedetermined by V'the location of the stop theretraction of the bolt outof `locking position is effected by. the pressing of the buttons 7 in apins 23.v Thefbolt is held in its retracted positionbythe projection ofa lever 35 into a notch or recess 36 formed in theplate 13,. the plateof the guide 15 being cut away to permit such engagement. 1 f

Y fThis lever '35v isk pivotally mounted,'asat"37,

from'a supporting bracket 38 carried by the Ybase Y plate l18- and isactuated to and -ffrom operative position by rotation of the knob 6through the medium of a cam 39Aeccentrically mounted on a shaft 40. TheIshaft 40 provides the'stem for the actuator knob 6 fand is suitablyjournalled-in the wall 5v of the door andin the-supporting bracket 38..,The cam 39 is secured tothe inner end ofV the shaft as illustrated inFigures 3 and 8, and

4 operates in a slot 41 formed in thelever arm 35.

The slot 41 is of-such length and is so positioned with respect to theshaft 4o as to limit the 'rotation thereof to 180". v c

Obviously, the toe of the lever 35 cannot be engaged in the notch orrecess 36 unless the plate 13 and the main bolt 8 connected therewith isfully retracted.

The lever 35, besides affording means to secure the main bolt in itsretracted position, also directly actuates an auxiliary bolt 42 to andfrom operative position. The auxiliary bolt 42 is secured to one end ofa bar 43 which is slidably mounted by means of a supporting arm 44received in an elongated slot` 45 formedcin the An operativeconnectionis afforded be` bar. tween the lever 35 and the bar 43 by apin 46 received between the arms of the bifurcated end 47 of the lever35. Y l

Consequently whenk the knob 6 is turned to throw-the lever 35 into itsoperative position projected into the recess 36, y,the auxiliary bolt 42is retracted, but retractionv isimpossible until the main bolt has beencompletely withdrawn which requires depression of all of the buttons7 inthe proper sequence. .Double security is tlnisA aorded againstUnauthorized unlocking of the mechanism. f l: l

In some instances Where the safe -is'frequently opened and closed asduring' thed'ay time in a busy commercial establishment, it isinconvenient to gothrough the entire combination every time the door isto be opened. For this reason a latch 48 is provided to releasablyVhold` the :mainr bolt in a partially retracted'position from whichcompletev retraction canY bev quickly effected by actuating only some ofthe buttons 7. This latch consists of a' substantially U-shaped elementhaving a latching finger 49 at one Side `of its central web50 and anactuating iinger 51 at theA opposite side thereof with itsarms l52drilled'to receive a shaft 53. .Theshaft 53 is slidable in alignedapertures formed in the plates 19 and is yieldingly urged upwardly by aspring 54 coiled aboutits upper end andconiined between a stop washer 55carried by the shaft andthe adjacentk plate 19. The movementof'the-shaft` by thev spring 54 is limited by across pin 56 ixed ,in theopposite end ofvthe s haftand engageable lwith the other plate k19. Astoppin 5'7"lv passed through'the shaft 53 andV engaging'thelowermost'arm 52 of the l'atchserves to hold it in. a position at whichits latching finger and actuating finger are aligned withV thecenter rowof stoppins 23. K From Figures 4 and 7, it is seenthat as the plate 13is retractedV against the actuation of its spring 16 by the propermanipulation ofv the buttons 7, the actuating finger 51 will be liftedby one of the pins 23to swing the latch 43l about the axis of thershaft53l and position/'the latching finger 49 in the path of a stop' 5Scarried ,by the plate. The stop 58 asamatter of convenience, may beidentical with the pins 23;

The stop 58 is so located with respect to thel latchingnger 49that, iithe plate 13 is released from its fully retracted position, bywithdrawal of the rlever 35 from engagement with the'vplate,

it will arrestthe motion of the plate at an intion of its total travel,but the auxiliary bolt.

42 is projected its entire distance. Release of the main bolt from theintermediate position at which it is held by latch 48, for thecompletion of its locking movement is eiected by 'shifting the latch 48downwardlya VASiuch downward shifting of the latch is accomplishedbythe-de'- pression of an additionalbutton 59. v

The button 59-is slidably projected' through aligned openingsV in thedoor and baseplate-IS. and projects through an opening in a mountingbracket 6G' riveted to the-base' plate (see Figure 6). An upset head 61on ther inner end of' the button precludes itsoutward displacement. Theinner end of the buttonis engagea'blewith-a seg-k ment 62 pivotallymountedfrom the bracketi),

asy at'63," a'noiservingv in `the capacity of` aibell crank-lever with aportion thereof engaging the lowerv arm 52 of the latch. Hence,depression of the buttonk 59 swings the segment 62 about itsmounting-f63 andpushes the entire latch downwardly out of alignment withthe center-row of stop pins 23, to free the plate 13 and the main boltconnected theretoror the completion of its locking movement. f.

Operation i To facilitate the description of the` modeof, operation andthe sequence of the action; the gA buttons '7' have been lettered a, b,c, d, e,'and' f,`

and the corresponding levers 26 have been'desig-nated a', b', c', d', e'and f.

Assuming that the mechanism is in its locked position withboth the mainbolt and the vauxiliary bolt projected into their operative positions:

To unlock` the mechanism with the combinationf-illustrated in thedrawings,` the button f is; rst-depressed,'to engage its lever fwith'the pin ZBindiCated-by the-character This rn'ovesv the plate 13 andthe main Vbolt ashort distance from its fully projected' position. Y

'Theretraction of the plate is continued by the;

' depression of the button b toengage its lever b with the pin 23indicated by the' character. b

Itis to be noted, however, tliatduringY the1 transition from one buttontothe other, it is .essential that the` iirst button Amust'be` held inuntil the next one has been actuated;

The vbuttons are then depressed in the follow.-A ing sequence, e, c, d,b, a and c. At this point,

v the plate l3'is fully retracted, permitting'the lever 35L to-be swunginto its operative holding-posin tionby actuation of the knob 6..y Thellatch 48 is` also .infits operative position ready to' hoidnrthe boltmits intermediate position ifY released byl withdrawal of the lever35.V4r

Complete releaseof the main bolt, -a-f-ter-withf` drawal of the lever5,as already defined, is` effected by: merely depressing the button. 59`whichdisengages the latch 48;

Return of the platey and `main bolt to its fullyv retracted positionfrom the intermediate location at Ywhich it is held by the latch,requiresonly the depression of the buttons a and c-and the rotationrofthe' knob 6- to re-engage. the leverl 35i-in they plate recess. .Y

From the foregoing descriptiontaken in conneV tion with thefaccompanyingdravvings, `will be' ,readily lapparent tov those Askilledin rthe art tov which this invention appertains, that :this -inv entionaffords novel andueiective means,v for lock= ing doors Voi alltypes andparticularly'the doersy of safes, which, because of itspeculiar'construc-v tionand the factthat all ofthe buttons must .beactuated, is practically incapable of being picked. -It is also evidentthat 4thedevice'is `in-A expensive to manufacture and that changing "orre-setting of its' combination whendesiredcan,v fbequickly and easilyeffected.V i

member and the lock bolt connectedtherewith upon actuation or the pushbut-tons in proper: 85

sequence.Y f i 2. In a lock of thecharacter. described, a slid-f ablymounted lock bolt,Y and permutation meansv to slide'thelockbolt in onedirection-comprising?- ar plurality of push buttons, a hat platefmemberlconnected with thebolt to be slidable ltherewith a plurality of'Vabutments on said platemem-ber, y and means operable `by the pushbuttons anden; n gageable with the'abutrnents to transmit motion-il fromthe push buttons'to the plate member andg5 consequently thelockbolt,Asaid abutments being,y so arranged on the plate member with respecttir" the meansxoperable byy the pushbuttons to;l require thesuccessiveactuationof the plvlhbu'tfl4 tons in a proper sequence toeifect` the desired movement of thelockbolt. ff y 3. In a lock of thecharacterdescribed-alockfv inggrnember having a plurality of abutments,pivif. oted `levers mounted fon engagement withthe abutmentsand pushbuttons to actuate said levl-'A- er'sinto engagement with theabutmentsand to move the locking member thereby, said abutinentsv being'sorranged with respect tothe pivotedlevf@ ers; as -to necessitatesuccessive actuation of the; n l push buttons in a proper sequence toeffect thede-J 116 .siredmovement of the locking-member., Y

4.11m a lock or the character described, a longitudinallyY slidablymounted lock bolt, springfurged to anoperative projected. position, V amem-v ber connected with'the lock Abolt `temovedirectlyYJ 'me ,I

therewith, stops mounted on said inembena plu-7,

rality oi push buttons,` means operable by the push buttons andengageable with the stops to.

retract said member and the lock bolt connecte xtherewith step-by vstepagainst the actionof-i urging spring the stops being so arranged onsaid. member with respect tothe push button actuated p' means asto'require actuation of the push buttons;

in l,av proper sequence andthe retention of apre-- cedingly actuatedpush button in its operative`r positionluntil `the next successivelyactuated push button yis depressed. i v

5. In alock :of the character described,

bolt, means yieldinglyprojectinglthe'lock boltto j v its operativeposition, means to4 retract the lock-1 leo' bolt. comprising, aplatemember. connected with. the lock bolt, aplurality of stop pins on theplat l member, a plurality oi pivoted levers mounted ad@ jacent theplate member `for engagement with-i the stop pins, and a pluralityorpush buttons-fjtog actuate thepivoted levers into engagement witlfulthe stop pins, said stop pins being so arranged,-`

on the plate-member with respect to the pivotedTr Y levers thatsuccessive depression offthelpush bute? ,tons in a predeterminedsequence movesJthe-plate, 1@ 'i member-stepby step to retract the lockbolt.4 6. In a lock of the characterdescribcd, aV meme` ber to be moved,and permutation means to mover.

said member comprising,aktplurality of stops con?.

nected with said linernber and arranged instraight ,i5

rows, a leverA in line with-eachrow of stops-,'said, levers beingpivoted" to turnabout xed axes to be engageablemith the Vvstops, andpush buttons to., actuate thelevers.v Y. a

7. VIn aloclz of the character ,described-,a mem- '153 ber to be moved,means yieldingly Vurgingsaicl wherebvthe levers engage the stopsuponbeng swung about their pivotal mountinga and push buttons to swingthe levers about their mount-` ings'.:

8. In a lock of the character described, a lock bolt yieldinglyprojected to locking position, permutation means for retracting thelock'bolt comprising, a plurality of push buttons, means to impartmovement from the push buttons to the lock bolt, said means being soarranged as to require theV successive actuation of the push buttons ina predetermined sequence to effect completeretraction of thelock bolt,means engageable with the lock bolt to releasably secure the same infully retracted position, vanauxiliary lock bolt, and a connectionbetween saidauxiliary lock bolt and said securing-means whereby4movement of said securing means shifts the auxiliary lock bolt. f

9. In a lock of the character described, a lock boit, a plateconnected-with said 100k boit, a piuralitylof stops carried by saidplate, a plurality of pivoted levers mounted for operative engagementwith the stops to successively move the plate and consequently the lockbolt in one direction, push buttons to actuate said pivoted bolt, meansto yiel-dingly project the lock Ibolt to operative position, a memberconnected with the lock bolt, a plurality of stops on said member, pushbuttons, means to transmit motion of the push levers', and lever meanshaving a part engageable with said plate when the plate is initsposition at which'the lock bolt is fully retracted to hold the plate andlock bolt in said retracted position.

10. In a lock of the character described, a main lock bolt yieldinglyprojected to its locking position, `a plate connected Withthe lock boltand movable therewith,v stops carried by the plate, pivoted leversmounted for engagement with the Vstops and operable upon properactuation .to

successively move the plate and retract the lock bolt, push buttons `toactuate said pivoted levers,

holding v'means having a part movable into a Vrecessin said plate whenthesame is in its position yat, which vthe main-lock bolt is fullyretracted to hold the plate and main lock bolt in its retractedposition,and an auxiliary lock vbolt operable by the holding means.

11." In a lock of the character described, a lock bolt` having -apredetermined range of movementl from locked tor fully unlockedposition, permutation means including ka plurality of pushv buttons toretract the lockbolt to its fully unlocked positiOn, holding means tosecure the lock bolt in said fully unlocked position, and secondaryhold- Ving'means'ope'rable to releasably retain the lock .bolt in'anintermediate position.

v 12. In a lock of the character described, a lock bolt movable to andfrom locked position, means yieldingly projecting the lock bolt to itslocked position, permutation means including` a plurality of pushbuttons, means tov impart movement from the push buttons to theY lockbolt to retract the lock bolt, holding means to releasably secure thelock bolt inv its fully retracted position, secondary holding meansoperable to releasably secure` the lockbolt inan intermediate position,and push button actuated means to release said secondaryholding means.

13. In a` lock device of the character'describ'ed,

. a lock bolt movable to and from locked position andyieldinglyprojected Vto said locked position,

a plate connected with the lock bolt, a plurality 14. In a lock deviceof the character described,v`

a lock bolt'I movable to an'd from locked position and yieldinglyprojected tosaid locked position, a plate connected vwith the lock bolt,a plurality of stops on said plate, a plurality of push buttons, meansoperable by the push buttons and vengageable with the stops toshift-,the plate and retract the lock bolt, and holding means auto--matically engageable with one of the stops to hold the plate andconsequently the locl; bolt `in a predetermined position I 15. In a lockdevice of the character described,

a lock bolt movable vto and from locked position and yieldinglyprojected to said `locked position,

fa'plate connected with the lock bolt, a plurality of stops on saidplate, a plurality of push buttons, means operable by the push buttonsand-engageable with the stops to shift the plate and retractv the lockbolt, holding means` automatically engageable with one of the stops tohold the plate and consequently the, lock .bolt in a predeterminedposition, and meansY to disengage said holding means from the stop tokfree theV plate yand lock bolt for projection to locked position; f

16. In a lock oi the character described, a lock buttons to said memberthrough the medium of the stops whereby, upon actuationof the .pushbuttons in a predetermined sequence, retraction of the lock bolt iseiiected, ailatch member to releasably hold'the lock bolt in apredetermined position, said latch member having a part movioo able intoalignment'vvithjone of the stops and another part engageable byanotherstop to effect movementof the latch member to position ,its

' 17. In a lock deviceof the character described,

a member to be moved, spaced groups of stopsY on engageable with eachlever Ato swing the same into engagement with la stop and through 'thelever impact movement to said member.

18. In a lock device of the character described,

a member to be moved, spaced groups of stops 'on said member, aplurality of levers'adjacenteachY group of stops, common means topivotallymount the levers` of each group with each lever arranged forengagement withat least one stopupon swinging movement thereof aboutitsl pivotal mounting, a plurality of `push buttons, oneoi said pushbuttons being engageable with each lever t'oswingthe same intoengagement with a stop and through' vthe lever impart movement tosaid-member, and

spring means to hold theleversdisengaged from the stopsand to Vprojectthe push buttonsv outwardly. f

lief

' v19. In a lock'device of the character described' Y including a lockbolt movable to and'fronioper'a-` tive' position, a plate connected withvthe lock` bolt and movable therewith, a plurality of spaced 120 iirstmentioned part -in alignment with said stop.'

mounted between said walls and said lock bolt aptuating member andoperableA by the push butstops projecting from one face of said plate, ashaft substantially parallel to said face of the plate and disposed at adistance therefrom, a plurality 0f` levers pivotally mounted on saidshaft and movable into engagement with said stops, and push buttonsoperable to actuate said levers.

20. In combination with a longitudinal shiftable lock bolt movablebehind and in a plane parallel to the outer face of a wall, lockmechanism mounted behind the wall to retract said bolt comprising ashiftable plate connected with the lock bolt and substantially parallelwith said outer face of the wall and spaced therefrom, a plurality ofstops on said plate and facing the outer face of the wall, motiontransmitting means between said shiftable plate and the wall, saidmotion transmitting means being cooperable with the stops to move theplate, an-d push buttons projecting through said wall and from saidouter face of the Wall to actuate said motion transmitting means. l

21. In a lock of the characterdescribed, a wall, a shiftable lock boltactuating-member spaced from the wall, a plurality of push buttonsonsaid wall and projectable toward the lock bolt actuating member,motion transmitting elements tons, and means `providing a`unidirectional'connection between said motion transmitting elements andthe lock bolt actuating member, said last mentioned means being sorelated-to the motionA transmitting elements that actuation of the pushbuttons in a predetermined sequence-is" n required to effect the desiredmovement on the` part of the lock bolt actuating member.

22. In a lock of the characterl described, a Wall,

a lock'bolt actuating member movably mounted behind the wall, spacedgroups oi motion transmitting elements disposed between the wall and rmember requires alternate actuation of the push Y buttons ofthe spacedsets in aproper sequence. ALFRED E. BUEROSSE.

